It's a brand new platform from Smith & Wesson - The CSX hammer-fired, micro 9mm. The CSX offers an aluminum alloy metal frame, ambi-thumb safety, interchangeable backstraps, changeable mag release button, and an ambi-slide stop, and comes with a 10 round magazine or an extended 12 round mag. Gun Talk's Ryan Gresham compares it to some of the more recent micros on the market today, including the Kimber Mako, Springfield Hellcat, Ruger MAX 9, Colt Defender, and the Taurus GX4, as well as the Smith & Wesson M&P 2.0 Sub-Compact and the Smith & Wesson Shield Plus.